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The automatic construction of large-scale knowledge graphs has received much attention from both academia and industry in the past few years. Notable knowledge graph systems include Google Knowledge Graph, DBPedia, YAGO, NELL, Probase and many others. Knowledge graph organizes the information in a structured way by explicitly describing the relations among entities. Since entity identification and...
An earthmoving vehicle powertrain is modeled as a MIMO hydrostatic system. Its control inputs include the engine throttle, the electro-hydraulic pump displacement and the flow valve commands. These inputs offer a great control freedom but need to be coordinated. A coordinated MIMO controller for a multi-load powertrain is designed by using an LQG/LTR technique. Modeling and control design are accomplished...
A double active gm-boosted-based inductorless differential wideband low-noise amplifier (LNA) is proposed in this paper. The proposed LNA applies two common-gate (CG) stages and the capacitive cross-coupled (CCC) technique. Moreover, a noise-cancelling architecture is adopted for low noise factor (NF). The proposed LNA is simulated in a TSMC 0.18-µm RF CMOS process.Within DC-1.2GHz, the LNA achieves...
A 0.1–6 GHz fully differential common gate low noise amplifier (CGLNA) is proposed in this paper. High equivalent transconductance (gm) is realized with active transconductance-boosting with cross coupling capacitance. By introducing a positive feedback path in active transconductance-boosting circuit, this circuit increases freedom of transconductance, thus alleviates the trade-off between input...
A major functionality of Inter-domain Traffic Engineering is to optimally allocate resources to meet traffic demand. We implement this functionality by introducing economics into the problem of performance optimization, achieving maximum performance while pursuing minimum economic costs. In this paper we propose the DOPE model (Dual-objective Optimization on Performance and Economics) as the foundation...
As the population of the younger generation keeps on decreasing rapidly in the recent years, many universities and colleges in Japan have to accept students with lower academic qualifications to meet the annual quotas. This has made higher education more accessible to high school graduates and as a result, students with great discrepancies in scholastic abilities are becoming involved in higher education...
In inductive Power Transfer (IPT) application, minimum supply VA rating and convertor conduction loss are two important design purposes. The LCL resonant convertor can achieve both of these objects when designed appropriately. In this paper, the LCL resonant tank is changed into two LC resonant networks, then the unity power factor compensation parameter which can minimum supply VA rating and current...
The waveforms of lightning discharges during a period of 15 minutes were checked. There are Regular Pulses Bursts (RPBs) in 83% lightning discharges. Statistical analysis of all the 693 RPBs in this period show that, typical width of pulses in RPBs is about 0.5–1 µs, typical interval between pulses of RPBs is about 2–10 µs and typical duration of RPBs is from 100 µs to 5000 µs. There is always chaotic...
Scalar multiplication algorithm is the core of the elliptic curve cryptosystem, and it plays a crucial role of the efficiency and security in the process operation of the encryption and decryption. Based on comprehensive analysis of NAF scalar multiplication algorithm and power analysis, this paper proposes a new NAF scalar multiplication algorithm, ensuring the same Hamming-weight with the NAF code...
In cognitive networks, with multiple relays available for spectrum sensing and data transmission, the system can get better performance than traditional methods. But with the imperfect spectrum sensing in practice, the secondary user's (SU's) transmission may interfere with the primary user (PU) inevitably. Hence, in this paper, we investigate the impact of imperfect spectrum sensing on PU and SU...
Quasi-continuous wave (quasi-CW) has been a great concern for taking both advantages of continuous wave and pulse signal. First, the mathematical model and ambiguity functions of binary phase-coded quasi-continuous wave signal are discussed; and the echo eclipse problem existing in the kind of radar system is also proposed. Then a new waveform for the echo eclipse problem is designed based on the...
Customer reviews written at online shopping sites greatly influence the decision of potential buyers. Since existence of noise in reviews is inevitable, helping users alleviate the influence of these noisy reviews has become a fundamental issue for improving service quality in e-commerce transactions, especially for C2C (customer-to-customer) sites. In this paper, we present an approach to reduce...
Accurate prediction for listed companies before financial distress arising is always a critical issue in financial administration, especially improving the accuracy of financial distress prediction (FDP). The features from the financial data are just different indexes which represent financial status of the listed companies in different aspects. These heterogeneous features bring huge challenge to...
Obstructive Sleep Apnea (OSA), defined by shallow breaths or complete cessation of breathing for more than 10s, is a significant contributing factor for the developments of hypertension, myocardial infarction, stroke and neuropsychological impairments. In this study, we have investigated the relation between apnea duration and apnea induced variations in cerebral blood flow velocity (CBFV) concomitant...
GNSS scalar tracking loop tracks each satellite signal in one channel separately, while vector tracking loop track all of the satellite signals in one navigation filter. Three major advantages of the vector tracking loop are reduction of estimated parameters, aiding weak signal tracking by strong signal and aiding signal tracking by navigation solutions. Differ from the former researches in which...
Precision of vehicle navigation can be significantly improved by adding motion constraints. How to model multi-motion constraints and choose appropriate motion constraint according to vehicle mobility need to be solved in practical usage. This article established a unified state error model and deduced a measurement model for several common vehicle motion constraints, like ZUPT, MCA and HDR, used...
Pipe strings, as critical components in oil and gas industry, are highly susceptible to axial cracks for stress corrosion and fatigue damage. The conventional detection methods, such as magnetic flux leakage and magnetic particle inspection, are inadequate for accurately detecting a narrow axial crack. Alternating current field measurement (ACFM) technique is an electromagnetic inspection method capable...
The different reflection or absorption characteristics of ground targets at different wavelength lead to diverse energy distribution among band images of hyperspectral images (HSIs). In this paper, we propose a sparse representation of HSIs using learned multi-scale dictionaries with the help of the distinctive physical characteristics. First, each band is cut into patches of different size using...
This paper addresses the pricing decision of the high timeliness merchandise under dynamic uncertainty, and investigates three different dual channel structures including retail channel, online channel and name-your-own-price (NYOP) channel. Firstly, this paper develops the aggregate demand function based on consumer utility theory, then analyzes the equilibrium pricing strategy and profit under different...
In this paper a moldless stack dispensing method to form an LED lens at the wafer level is presented. This method uses a dispensing process to form a lens with high H/L ratio, where H and L stand for the height and the base length of the lens. Silicon wafer is used as the substrate. V-groove trenches are made on the surface of the wafer to define the size of the substrates. In the dispensing process...
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